当前位置：首页 > 过刊浏览->2019年40卷第4期
铸态高强度高伸长率合成球铁的试验研究
Study on the High Strength and High Elongation of As-cast Synthetic Ductile Iron
浏览(1773) 下载(14)
- DOI:
- 作者:
- 谢来旺 蔡坤山 范晓明 王修强
XIE Laiwang;CAI Kunshan;FAN Xiaoming;WANG Xiuqiang
- 作者单位:
- 湖北三环铸造股份有限公司 武汉理工大学材料科学与工程学院
Hubei tri-ring casting incorporated company,Suizhou 441300,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China
- 关键词:
- 铸态 高强度高伸长率 QT700-10 合成球铁
as-cast high strength and high elongation QT700-10 synthetic ductile iron
- 摘要:
- 采用中频感应电炉熔炼,以废钢、原料纯铁为主要炉料,通过Cu、Ni合金化,优质增碳剂增碳,利用钟罩法分别进行炉内预处理和球化处理,浇包冲入法孕育处理,树脂砂壳型,制备了铸态高强度高伸长率合成球铁Y块铸件。结果表明,石墨球化级别2级,石墨大小7级,基体组织细小,为珠光体-铁素体混合基体,其中珠光体的含量为65%,铸态合成球铁的抗拉强度和伸长率分别达到763.0 MPa和11.2%。Using medium frequency induction furnace smelting,pure iron as the main burden with scrap steel,raw material,through the Cu,Ni,alloying,high quality recarburizer carburization,respectively by the method of bell jar furnace pretreatment and spheroidized,ladle inoculation into method,shell mold casting resin sand,the preparation of as-cast high strength and high elongation synthetic Y type of ductile iron casting.The results show that the graphite spheroidization grade is grade 2,the graphite size is grade 7,the matrix structure is fine,the pearlite-ferrite mixed matrix,the pearlite content was 65%,the tensile strength and elongation of as-cast synthetic ductile iron reached 763.0 MPa and 11.2%,respectively.